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Molecules
Special Issues
Design, Synthesis and Application of Supramolecular Functional Materials
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Design, Synthesis and Application of Supramolecular Functional Materials

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 3551

Special Issue Editors

Prof. Dr. Sébastien Clément

E-Mail Website
Guest Editor
Institut Charles Gerhardt, Université de Montpellier, Montpellier, France
Interests: conjugated materials; molecular self-assembly; organic electronic; therapy
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Mathieu Surin

E-Mail Website
Guest Editor
Laboratory for Chemistry of Novel Materials, University of Mons, Mons, Belgium
Interests: supramolecular assemblies; conjugated materials; bioinspired structures; sensing; therapy

Special Issue Information

Dear Colleagues,

Supramolecular chemistry has proven to be a powerful tool for the design and development of highly complex architectures for a wide range of applications in biology, medicine and materials science. Indeed, non-covalent interactions, such as hydrogen bonding, CH-π, π-π, halogen-bonding, and electrostatic interactions, provide a versatile toolbox to elaborate supramolecular materials exhibiting a highly dynamic, adaptive and reversible stimuli-responsive behaviour. These unique properties permit new functions that are not available for their conventional covalent counterparts to be achieved. This Special Issue aims to highlight the very recent progress in this field focusing on the design and synthesis of organic and inorganic supramolecular materials, their hierarchical assembly at higher scale and how this determines their bulk properties and thus, their usage. Contributions discussing all aspects broadly indicated by the keywords are strongly encouraged.

Prof. Dr. Sébastien Clément
Prof. Dr. Mathieu Surin
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Supramolecular chemistry
  • Non-covalent interactions
  • Self-organization
  • Self-assembly
  • Molecular recognition
  • Supramolecular polymers
  • Functional materials
  • Supramolecular gels
  • Dynamic nanomaterials

Published Papers (2 papers)

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Research

16 pages, 2308 KiB  
Article
Fluorescent Dynamic Covalent Polymers for DNA Complexation and Templated Assembly
by Clément Kotras, Maxime Leclercq, Maxime Roger, Camille Bouillon, Antonio Recupido, Aurélien Lebrun, Yannick Bessin, Philippe Gerbier, Sébastien Richeter, Sébastien Ulrich, Sébastien Clément and Mathieu Surin
Molecules 2022, 27(19), 6648; https://doi.org/10.3390/molecules27196648 - 06 Oct 2022
Cited by 1 | Viewed by 1579
Abstract
Dynamic covalent polymers (DCPs) offer opportunities as adaptive materials of particular interest for targeting, sensing and delivery of biological molecules. In this view, combining cationic units and fluorescent units along DCP chains is attractive for achieving optical probes for the recognition and delivery [...] Read more.
Dynamic covalent polymers (DCPs) offer opportunities as adaptive materials of particular interest for targeting, sensing and delivery of biological molecules. In this view, combining cationic units and fluorescent units along DCP chains is attractive for achieving optical probes for the recognition and delivery of nucleic acids. Here, we report on the design of acylhydrazone-based DCPs combining cationic arginine units with π-conjugated fluorescent moieties based on thiophene-ethynyl-fluorene cores. Two types of fluorescent building blocks bearing neutral or cationic side groups on the fluorene moiety are considered in order to assess the role of the number of cationic units on complexation with DNA. The (chir)optical properties of the building blocks, the DCPs, and their complexes with several types of DNA are explored, providing details on the formation of supramolecular complexes and on their stability in aqueous solutions. The DNA-templated formation of DCPs is demonstrated, which provides new perspectives on the assembly of fluorescent DCP based on the nucleic acid structure. Full article
(This article belongs to the Special Issue Design, Synthesis and Application of Supramolecular Functional Materials)
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9 pages, 3591 KiB  
Article
Fluorescent Molecular Logic Gates and Pourbaix Sensors in Polyacrylamide Hydrogels
by Glenn J. Scerri, Melchior Caruana, Nicola’ Agius, Godfrey Agius, Thomas J. Farrugia, Jake C. Spiteri, Alex D. Johnson and David C. Magri
Molecules 2022, 27(18), 5939; https://doi.org/10.3390/molecules27185939 - 13 Sep 2022
Cited by 1 | Viewed by 1490
Abstract
Polyacrylamide hydrogels formed by free radical polymerisation were formed by entrapping anthracene and 4-amino-1,8-naphthalimide fluorescent logic gates based on photoinduced electron transfer (PET) and/or internal charge transfer (ICT). The non-covalent immobilisation of the molecules in the hydrogels resulted in semi-solid YES, NOT, and [...] Read more.
Polyacrylamide hydrogels formed by free radical polymerisation were formed by entrapping anthracene and 4-amino-1,8-naphthalimide fluorescent logic gates based on photoinduced electron transfer (PET) and/or internal charge transfer (ICT). The non-covalent immobilisation of the molecules in the hydrogels resulted in semi-solid YES, NOT, and AND logic gates. Two molecular AND gates, examples of Pourbaix sensors, were tested in acidic aqueous methanol with ammonium persulfate, a strong oxidant, and displayed greater fluorescence quantum yields than previously reported. The logic hydrogels were exposed to aqueous solutions with chemical inputs, and the fluorescence output response was viewed under 365 nm UV light. All of the molecular logic gates diffuse out of the hydrogels to some extent when placed in solution, particularly those with secondary basic amines. The study exemplifies an effort of taking molecular logic gates from homogeneous solutions into the realm of solid-solution environments. We demonstrate the use of Pourbaix sensors as pE-pH indicators for monitoring oxidative and acidic conditions, notably for excess ammonium persulfate, a reagent used in the polymerisation of SDS-polyacrylamide gels. Full article
(This article belongs to the Special Issue Design, Synthesis and Application of Supramolecular Functional Materials)
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